Sven Huisman an Matthijs Haverink over at http://virtualfuture.info have written a comparison chart with the following products:
Microsoft Softgrid
VMware ThinApp
Installfree Bridge
Citrix Application streaming
Symantec Appstream
Xenocode Virtual Application Studio
This comparison chart is an objective overview of features of the major Application Virtualization solutions. Some of the major advantages are:
• Migrate to new operating systems without upgrading or replacing legacy applications.
• Lock down corporate endpoints by running applications in user mode without locking out users.
• Minimize application conflicts and regression testing.
• Replicate your virtualized applications like any other enterprise data to maintain an instant-on fail-over plan for your applications.